PREVOST H3-41 Maintenance Manual

SECTION 22: HEATING AND AIR CONDITIONING
PA1621 Maintenance Manual All Series | Section Revised November 2017
69
Failure Symptoms Probable Cause Check and Correct
1X Flash (F 01)
No combustion after completion
of startup sequence.
- Fuel system
- Combustion air
- Electronic ignition
- Fuel level
- Type of fuel being used
- Fuel filter
- Fuel line connections (air bubbles in fuel lines)
- Fuel nozzle plugged
- Air intake or exhaust, restricted or plugged
- Incorrect electrode gap
2X Flashes (F 02)
Flame out during burner
operation no restart possible
- Fuel supply (shortage of fuel) - Restriction in the fuel system
- Fuel filter
- Fuel line connections (air bubbles in fuel lines)
- Type of fuel being used
3X Flashes (F 03)
Low voltage for more than 20
seconds
- Electrical system - Load test batteries
- Corrosion at connections
- Loose connections
4X Flashes (F 04)
Flame detector recognizes false
flame signal during pre-start or
shut-down cycle
- Defective flame detector - Replace flame detector
5X Flashes (F 05)
Flame detector
- Wiring
- Defective flame detector
- Damaged wiring, open or short circuit
- Replace flame detector
6X Flashes (F 06)
Temperature sensor
- Wiring
- Defective temperature sensor
- Damaged wiring, open or short circuit
- Replace temperature sensor
7X Flashes (F 07)
Fuel solenoid valve
- Wiring
- Defective solenoid valve
- Damaged or corroded wiring, open or short circuit
- Replace solenoid valve
8X Flashes (F 08)
Combustion air fan motor
- Wiring
- Wrong RPM
- Defective combustion air fan motor
- Damaged wiring, open or short circuit
- Replace combustion air fan
- Replace combustion air fan
9X Flashes (F 09)
Circulation pump motor
- Wiring
- Defective circulation pump motor
- Damaged wiring, open or short circuit
- Replace circulation pump motor
10X Flashes (F 10)
Temperature limiter
- Overheat condition
- Coolant flow
- Wiring
- Defective temperature limiter
- Reset temperature limiter
- Coolant level or flow restriction
- Air trapped in coolant circuit
- Damaged or corroded wiring, open or short circuit
- Replace temperature limiter
11X Flashes (F 11)
Electronic ignition coil
- Wiring
- Defective electronic ignition coil
- Damaged wiring, open or short circuit
- Replace electronic ignition coil
12X Flashes (F 12)
Heater lock out
- 3 repeated faults/flame-outs or
5 repeated start attempts
- Reinitialize control unit by switching heater on
and disconnecting power.

PREVOST H3-41 Specifications

General

Brand	PREVOST
Model	H3-41
Category	Motorhomes
Language	English